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Like humans, fish need oxygen to survive, so how do fish breathe underwater? Oxygen helps release the energy that powers our bodies from the sugary chemical glucose in a process called...
Instead of breathing air, fish must get their oxygen from the water. This process requires large volumes of water to pass through absorption surfaces to get enough oxygen into their bodies using their mouths and gills. These body parts work like a pump to keep water moving over the gas absorption surfaces of the gills.
Fishes perform breathing using a specialized filter-like organ called gills. Gills are found on both sides of their head, protected by a bony cover called the operculum. The breathing process in fish requires large volumes of water to pass through their bodies to get enough oxygen.
How Do Fish Breathe? A fish breathes by first taking in a big gulp of water, and as this water passes through its body, it goes over the gills. The absorbent nature of the gills means they’re able to take in just the oxygen from this water and pass it into the bloodstream efficiently.
Fish possess specialized structures to carry out the respiratory function, helping them inhale oxygen dissolved in water. Respiration in fish takes place with the help of gills. Most fish possess gills on either side of their head.
Fish breathe through their gills, which are specialized organs that extract oxygen from the water. Gills are made up of thousands of filaments, which are lined with tiny finger-like projections called lamellae. This creates an enormous surface area for oxygen to diffuse into the bloodstream.
Some fish can breathe air through vascularized (i.e. having veins to transport oxygen and other nutrients) bladders, but the lungfish have actual lungs. This allows them to take oxygen from the air, rather than just the water due to the insufficiency of their lungs.
A fish breathes by taking water into its mouth and forcing it out through the gill passages. As water passes over the thin walls of the gills, dissolved oxygen moves into the blood and travels to the fish's cells.
When it comes to breathing, fish are masters of extracting oxygen from the water. Their bodies are perfectly adapted to tap into this underwater supply, and it’s all thanks to a remarkable process called diffusion. Imagine a sponge, soaking up water to quench its thirst.
Fish pull water in through their mouths and pump it over their gills — the fish version of lungs. These gills are equipped with filaments, which are red fleshy tissues with large surface areas...